Gas-generator.



F. KRAUSS.

GAS GENERATOR.

APPLIOATION FILED MAR. 27', 1918.

Patented May 5, 1914.

rnxnnnrcn KRAUSS, or MUNICH, GERMANY.

GAS-GENERATOR,

Specification of Letters Patent,

Patented May 5, 1914.

Application filed March 27, 1913. Serial No. 757,060.

To all wkom'z't may concern:

Be it known that I, Fninnnron KnAoss, a subject of the Emperor ofAustria-Hungary, residing at Landwehrstrasse 39, Mu nich, Germany, haveinvented certain new and useful Improvements inv Gas-Generators, ofwhich the following is a specification.

My invention relates to gas generators of the ebb and flow type, whereina gas evolvin solid such ascalcium-carbid, held suspen ed in aforaminous pan, is adaptedto be decomposed by a suit-able liquid, whereby gas such as acetylene gas is evolved.

The principal object of the invention is to provide in a gas generator,automatically operating means whereby the pressure of gas evolved in thegenerating chamber is maintained substantially constant with respect toa predetermined pressure normal or standard. I

A further object of the invention is to pro- I vide a structure whereinthe gas in the generating chamber itself cotiperates in the maintenanceof the predetermined pressure standard.

A further object of the invention is to so arrange the device that therate of gas evolution and the pressure thereof, will be automaticallyaccommodated to the gas consumption.

A structure embodying my invention, includes a gas generating chamber, apressure regulating chamber, and means whereby communication between the,two chamhers is established or closed.

I have illustratively exemplified the preferred form of the invention inthe accompanying drawing, wherein the figure is a vertical sectionalview of a gas generator embodying the several features of my invention.I

Referring to the accompanying drawing by characters of reference, 1designates ,a container or vessel of any suitable construction; designedto be tightly closed by the cover 1' through the medium of the wingednuts 3 and 4. Suspended within the vessel 1 is a hell 2, the latterbeing firmly secured to the cover 1 by means of the service pipe 15provided with the controlling valve 16.

The interior of the bell constitutes the gas generating chamber 10 andthe interior of the casing 1 surrounding the bell constitutes thepressure regulating chamber 11 all as more fully hereinafter described.The

to afford communication between the chamber 10 and the chamber 11, whichlatter in addition to serving as a pressure regulating chamber, is alsodesigned to receive the liquid which decomposes the solid 8 for the prpose of gas generation.

The cover 1 of the receptacle 1 is provided with a. centrally bored boss24 to which is attached a housing 25 in which a flexible diaphragm 19 iscentrally clamped. Superimposed on the housing 25 is a centrally boredblock 26, the upper face of which carries a scale 23,. graduated to anystandard which. may-,be'determined em pirically. Extending through thecentral bore of the block 26 is a screw 21 carrying near its upperend anindex or pointer 22 adapted to be moved over the scale 23, said indexbeing secured to the screw by the nut 28. The block 26 is internallythreaded to correspond ,with the threads of the screw 21.

The lower end of the screw 21 is smooth and reduced in diameter, and isencircled by one end of a helical spring 20, the other end 'of' saidspring contacting with the diaphagm 19 at approximately its centralpart. Contacting with the diaphragm 19 opposite the spring 20, is theenlarged end of a rod 18 which passes through the boss 24, and throughavertical bore 27 in the .block 9, and carries at its lower end apreferably conical valve 13 adapted to engage the seat 9? formed in thelower faceof the block 9. As clearly shown in the drawing, the lower endof the duct '12 is substantially in line with the lower end of the bore27, so that the valve 13 serves to control both passages. I

The operation of the invention will be understood from the followingdescription thereof: A suitable liquid is introduced into the container1, to approximately the level of the line XX. The bell 2 is theninserted whereby the liquid will be displaced and caused to rise toapproximately the height illustrated in the drawing. The cover 1carrying-the bell 2 is then tightly clamped on the receptacle 1 by thenuts 3 and 4, it being assumed level, of liquid in the belll2 will becaused toof course, that the valve rod 18 and its appurtenant parts havebeen installed in position. The index 22 is then moved over phragm to acorresponding degree. Theflexure of the diaphragm also results inunseating the valve 13 to a degree corresponding with the desiredpredetermined pressure. The interior of the chamber 11 being open to thediaphragm 19 through the bored boss, 24, the airin chamber 11 will befree to act against the diaphragm.

As the liquid in chamber 11 passes up through the bottom of the bell .2,it contacts with the sol-id 8 and the evolution of gas commences.Assuming, now that the pressure in the chamber 11 is less than thepredetermined Zpressure indicated by the index 22, the pressureinchamber 11 will be insuificient to cause the diaphragm 19 to overcomethe action of the spring 20, whereby this spring .will depress rod 18and -unseat the valve 13. When valve 13 is amseated gas will flow fromchamber 10, through duct 12, into chamber 11. The diameter cf duct [12is so small that gas, but not water, may fiow therethrouh, andconsequently the emission opening '0 this duct may be under waterWithout any detrimental effect on the action of the apparatus. The gasflowing into 11 increases the pressure therein forcing a greaterquantity Ofi-WhitGI into contact with the solid 8 and thus enhancing therate of gas evolution. chamber 11 has been raised -to the desired degreethe diaphragm 19 overcomes the tension of spring '20, seating the valve:13 and closing the lower end of duct '12, whereby communication betweenthe upper parts of chambers to and 11 is discontinued. As long as thepressure in chamber 11 does not fall below the predetermined pressurefor this chamber, the valve 13 remains seated.

If the valve 16 of the service pipe 15 be opened, so that gas flows outof thechamber 10, an increased quantity of fluid will flow from chamber11 against and through the bottom of the bell, whereby the pressure in11 will decrease, the diaphragm 19 will drop a corresponding extentallowing the spring 20 to unflex and automatically unseat the valve 13.Gas will then again flow into the chamber 11, until the pressure thereinis raised to the predetermined degree, thus again restoring normalconditions and causing the valve 13 to be seated. Should the pressure inchamber 10 .beitoo great, the:

lower. thus automatically diminishing the rate of gas generation.

When the :pressure in the apparatus operates is that of the differencein pressures in chambers 10 and 11. The generation of gas is dependentupon this difi'erence in pressures, the standard pressure beingdetermined independently of the consumption and generation of gas, bythe screw 21 and the parts coacting therewith, and it will be noted thatirrespective of the quantity of gas consumed the predetermined standardpressure will always be automatically restored.

What I claim is 1. A gas generator, embodying therein a gas generatingchamber, a pressure regulating chamber completely inclosing said gasgenerating chamber and adapted to contain a liquid, and means governedby the pressure in said pressure regulating chamber wherebycommunication between said chambers may be-established or closed toregulate the pressures in said chambers.

2. A gas generator, embodying therein a gas generating chamber, apressure regulating-chamber completely inclosing said gasgenerating-chamber and adapted to contain a liquid, and means carriedpartly by said gas generating chamber :and governed by the pressure insaid pressure regulating chamber whereby communication between saidchambers may .be established or closed to regulate-the pressures in saidchambers.

3. A gas generator, embodying therein a gas generating chamber, apressure regulating chuunber completely inclosing said gas generatingchamber and adapted to contain a liquid, and nutomatically'operatingmeans governed by the pressure in said pressure regulating chamberwhereby communication between said chambers maybe automaticallyestablished or closed to regulate the pressures in said chambers.

4. A gas generator, embodying therein a gas generating chamber, aressure regulating chamber completely inclosing said gas generatingchamber and adapted to contain a liquid, means whereby communicationbetween said chambers may be established or closed, and means controlledby the pressure chamber whereby communication between said chambers maybe established or closed, and means cont-rolled by the pressure in saidpressure regulating chamber for actuating said'first named means.

U. A gas generator, embodying therein a gas generatingchamber and asurrounding pressure regulating chamber with means whereby said chambersmay communicate with each other, and means governed by the pressure insaid pressure regulatin cham- A v ber for establishing and automatical ymaintaining a predetermined pressure in each of said chambers. a

7. A gas generator, embodying therein a gas generating'cliamber, apressure regulating chamber completely inclosing said gas generatingchamber, means for predetermining the pressure to prevail in the latter,and means governed by the pressure in said pressure regulating chamberwhereby gas is conducted from the gas generating chamber into thepressure regulating chamber when the pressure therein descends below thepredetermined amount.

8. A gas generator, embodying therein a gas generating chamber, apressure regulating chamber completely inclo-sing said gas generatingchamber, meanswhereby communication may be established or 'closedbetweensaid chambers, means controlled by the pressure in said pressure"regulating chamber for actuating said first named means, and means forsetting said actuating means to operate at a predetermined pressure insaid pressure regulating chamber.

9. A gas generator, embodying therein a casing having its interiorformed as a pressure regulating chamber, a bell Within said casing andhaving its interior formed as a gas generating chamber, there being aconstricted passage affording communication between said chambers, andmeans governed by the pressure in the pressure regulating chamber forautomatically opening or closing said passage. r

a 10; A gas generator, embodying therein'a casing having its interiorformed as a pressure regulating chamber adapted to contain a liquid, abell within said chamber and having its interior formed as a gasgenerating chamber adapted to contain a solid designed to be decomposedby the action of theliquidfrom said first named chamber,

there being a constricted passage'afiording communication between saidchamber, means for opening or closing said passage, and

means controlled by the pressure in said pressure regulating chamber forautomati-' cally actuating said first named means.

11. A gas generator embodying therein a casing having its interiorformed as a pressure regulating chamber, a bell Within said chamber andhaving its interior formed as a gas generating chamber, there being apassage in said bell affording communication between the upper parts ofsaid chambers, a

valve adapted to open or close said passage, and means controlled by'the pressure in said pressure regulating chamber for automaticallyactuating said valve.

tion in the latter causes actuation of saidvalve.

13. A gas generator, embodying therein a casing containing a pressureregulating chamber, a gas generating chamber within and completelyinclosed by said pressure regulating chamber, there being a passageaflording' communication between said chambers, a fiexible diaphragmexteriorly of said pressure regulating chamber movable by pressurevariations in said pressure regulating chambers, and means operativelyas- @sociated with said diaphragm for alter- I nately opening or closingsaid passage.

14. A gas generator, embodying therein a casing containing a pressureregulating chamber, a gas generating chamber Within said pressureregulating chamber, there being a passage alfordingcommunication betweensa-ld chambers, a flexible diaphragm exteriorly of said pressureregulating chamber and movable by pressure variations in said pressureregulating chamber, means for initially flexing said diaphragm apredetermined degree, and means actuated by said diaphragm foralternately opening or closing said passage.

15. A gas generator, embodying therein a casing containing a pressureregulating chamber adapted to contain a liquid, a bell within saidchamber forming a gas generating chamber adapted to contain a solidevolving gas by the decomposing action of said liquid, there being apassage in said bell afi'ording communication between the upper parts ofsaid chambers, a flexible dia-. phragm arranged exteriorly of saidpressure regulating chamber and in open communication therewith, meansfor initially flexing said diaphragm a predetermined degree,and

means governed by themovement's of said diaphragm to open or plose saidpassage and regulate the quantity of liquid. passing from the pressureregulating chamber into contact withthe gas evolving solid in the gasgenerating chamber. f

In testimony whereof-,1 have afiixed my signature in presence of twowitnesses.

FRIEDRICH KRAUSS.

Witnesses:

RICHARD LEMP, JorrANNA STERN.

